action n. 1.動作,活動;行為,行動。 ★ act 指一次所作的行為;action 雖與 act 同義,但多半指某一期間內(nèi)出現(xiàn)數(shù)次的行動;累積而成的 action 叫做 conduct. 2.舉動,態(tài)度,姿勢。 3.主動力,作用,機能。 4.(機械裝置中)有動作的部分;機械裝置[作用]。 5.措施,手段。 6.(演員的)表演;(小說等中的)情節(jié)。 7.【法律】訴訟。 8.【軍事】戰(zhàn)斗,戰(zhàn)事。 9.某一地區(qū)[場合]內(nèi)最熱鬧盛行的活動。 10.〔美口〕刺激性的活動;賭博。 a chemical action 化學(xué)作用[反應(yīng)]。 Take (prompt) action 采取(快速)措施。 Accept action 應(yīng)戰(zhàn)。 An encounter action 遭遇戰(zhàn)。 A defensive [an offensive] action 防御[攻擊]戰(zhàn)。 A-! 【電影】開演! A- stations!【軍事】各就各位! Action of the bowels 【醫(yī)學(xué)】通便(作用)。 Action of the first impression 【法律】新訴〔無以前判例可循的訴訟〕。 Be in action 行動中。 Be put out of action 失掉戰(zhàn)斗力;(機械等)出毛病,不靈。 Break off an action 停戰(zhàn)。 Bring [take] an action against 對…提起訴訟,控告。 Bring [come] into action 使…參加戰(zhàn)斗,參戰(zhàn),使開始戰(zhàn)斗,開戰(zhàn)。 By [under] the action of 在…作用下。 Clear (a ship, or the decks) for action (軍艦)準(zhǔn)備戰(zhàn)斗。 Go into action 開始行動;投入戰(zhàn)斗。 Line of action 【物理學(xué)】作用線;〔比喻〕活動的形式[方針]。 Man of action 活動家,實行家。 Out of action 損壞;有故障。 Put into [in] action 實行,實施;開動。 See action 加入戰(zhàn)斗。 Suit the action to the word 見 suit 條。 Take action (in) 1. 著手,動手,開始。 2. 提起訴訟 (against)。 vt. 古語〕對…提起訴訟。 -er n. (電影的)動作片,打斗片。
With the joint action of the q - switched pulse laser of 532nm and continuous probe light of different wavelengths , fast photoresponse characteristic of photocycle of a wild - type br film ( wt3 ) and photoabsorption characteristic of different intermediary in the photocycle are analyzed and discussed . the optical switch action in the microsecond scale is observed in the experiment 在532nm的調(diào)q脈沖激發(fā)光和不同波長的連續(xù)探測光作用下,分析和研究了野生型的細(xì)菌視紫紅質(zhì)( wt3 )膜的光循環(huán)過程中的快速響應(yīng)特性及各中間態(tài)的快速光吸收特性,得到了微秒級的快速光開關(guān)結(jié)果。
Multilevel inverter technology is a pop research in high voltage and high - power converting fields . it can synthesize multilevel output with the distribution of dc voltage and the combination of different switching actions to reduce voltage stress across the switches and bulk of the equipment , and lessen output harmonic distortion and switching loss of the inverter 多電平逆變器是當(dāng)前高壓大功率電能變換領(lǐng)域中的研究熱點之一,它通過對直流側(cè)的分壓和開關(guān)動作的不同組合,實現(xiàn)多電平階梯波輸出電壓,能有效地減小器件承受的電壓應(yīng)力,縮小裝置體積,減小輸出電壓諧波和開關(guān)損耗。
High - frequency link power converters are receiving increasing attention . when the input frequency of ac - ac converter is quite high , such as 20khz or above , in order to make sure the converter switching action is restricted to the zero crossing point of the link voltage , the switching cycle becomes discrete pulse spectrums , however , the conventional pwm converters are ruled out because they would fail either to the efficiency or the low - distortion criteria 當(dāng)交-交變頻器的輸入頻率非常高,通常為20khz時,為了在零電壓條件下實現(xiàn)逆變器開關(guān)管的通斷,變換器的開關(guān)時刻必須選擇在高頻交流電壓脈沖為零時,這意味著變換器開關(guān)時刻在時間軸上成為不連續(xù)的點,而常規(guī)的硬開關(guān)pwm變換器是將開關(guān)時刻選擇在任意時刻。
Although dm can also solve the modulation time error , but the output waveforms can ’ t reach the industrial standard ( total harmonic distortion thd ) . considering this , a new control strategy called current optimal control ( coc ) is presented in paper . coc is that system samples the output value real time , comparing with expected value , considering all switching actions available then draw a concluding to decide which way would be fastest and best way to render system smooth 針對這一缺點,本文提出了一種更好的控制策略,電流最優(yōu)delta調(diào)制,它是在電流滯環(huán)控制的基礎(chǔ)上,根據(jù)電路的輸出信號來分析,考慮所有可能的逆變器動作來決定選用哪一種開關(guān)轉(zhuǎn)換方式能最快最平穩(wěn)地達到預(yù)期值,采用的是一種電流預(yù)測控制手段,從而使輸出波形的紋波最小。
Continuous - time filter needn ’ t a / d switch , data processing , d / a switch technique and so on to finish filtering function with analog signal like digital filter . and it needn ’ t switch action to sample data in the discrete time with analog signal like switched capacitor filter . so continuous - time filter has several advantages , such as high processing speed , simple circuit configuration , and low power consumption 對每種方法都進行了詳細(xì)的推導(dǎo),總結(jié)了每種設(shè)計方法的設(shè)計步驟、適用場合,舉例用每種設(shè)計方法對具體濾波器進行了電路設(shè)計、靈敏度特性分析、失真特性分析等,并用計算機仿真驗證了電路方案。